True, the project will develop but much depends on the team itself, how they want it and how the marketing will take place.
And of course there are financial limitations. In order to hire high-class programmers need a lot of money. Therefore, it is very important how actively they invest in the project. And how and where the team spends this money.
Some projects have their own teams of programmers who work on the result, because they themselves are the creators of the project.